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        <title>Document</title>

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        <div class="simple_square">
            <h1>Containers / Контейнеры</h1>
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        <main>
            <div class="some_div_1">
                <h2>Base some_div_1</h2>
                <div class="nested_some_div_left_1">
                    <h2>Nested div</h2>
                    <p>nested_some_div_left_1</p>
                </div>
                <div class="nested_some_div_left_2">
                    <h2>Nested div</h2>
                    <p>nested_some_div_left_2</p>
                </div>
            </div>

            <div class="some_div_2">
                <h2>Base some_div_2</h2>
                <div class="nested_some_div_right_1">
                    <h2>Nested</h2>
                    <p>Hello</p>
                </div>
                <div class="nested_some_div_left_2">
                    <h2>Nested</h2>
                    <p>edpfikjgpoewutiouehdlifgj</p>
                </div>
            </div>
        </main>
       
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